Understanding computers  : communications 

 - Amsterdam  :Time-Life Books,  1986. 
 - 128p.  :ill.  ;29cm. 
 - Bibliography: p.123-125 .
<br/><br/><br/>Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks
<br/><br/><label>LC Class. No.: </label>TK5105.5.U5